Table 4,,,,,
Percent shares of the Sectors Covered in the Composite Estimates of U.S. Commercial Freight: 2002,,,,,
Sectors," Value 
(Percent) "," Tons 
(Percent) "," Ton-miles 
(Percent) ",,
Total composite estimate, 100.0 , 100.0 , 100.0 ,,
CFS total, 64.3 , 59.9 , 71.2 ,,
Non-CFS total, 35.7 , 40.1 , 28.8 ,,
Construction, 9.8 , 4.5 , 1.3 ,,
Imports, 8.9 , 5.9 , 6.0 ,,
Natural gas, 4.5 , 9.7 , 7.8 ,,
Retail, 4.4 , 2.6 , 0.5 ,,
Services, 2.9 , 1.9 , 0.7 ,,
Farm-based, 1.5 , 5.4 , 0.9 ,,
Publishing, 1.1 , 0.2 , 0.4 ,,
Net exports (1), 0.8 , 0.1 , 0.1 ,,
Crude petroleum, 0.7 , 4.6 , 6.5 ,,
Municipal solid waste, 0.3 , 2.5 , 0.5 ,,
Petroleum products, 0.2 , 0.5 , 3.5 ,,
Households and business moves, 0.1 , 0.1 , 0.1 ,,
Logging, 0.1 , 1.9 , 0.5 ,,
Fisheries, - , - , - ,,
KEY: – Represents measurement less than one-tenth of one percent.,,,,,
(1) Net exports represent the difference between U.S. official merchandise trade exports and the Commodity Flow Survey estimates.  These composite estimates serve as the 2002 benchmark data for the FHWA Freight Analysis Framework II.,,,,,
"SOURCE:  U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics and U.S. Department of Commerce, U.S. Census Bureau, 2002 Commodity Flow Survey, United States Data, December 2004 plus additional composite estimates. The composite estimates were developed through a cooperative effort by the Bureau of Transportation Statistics and the Federal Highway Administration.",,,,,